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Anticlinal trap. An anticline is an area of the subsurface where the strata have been pushed into forming a domed shape. If there is a layer of impermeable rock present in this dome shape, then water-insoluble hydrocarbons can accumulate at the crest until the anticline is filled to the spill point (the highest point where hydrocarbons can escape the anticline).
Formation of a river anticline by river erosion and the associated isostatic rebound. As the river erodes the overlying material, the underlying rocks will rebound up, like a block in water if you remove a weight from on top of it, forming an antiformal structure. (Image created by Michael Stevens)
Cross-sectional diagram of an anticline Anticline exposed in road cut (small syncline visible at far right). Note the man standing in front of the formation, for scale. New Jersey, U.S. In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is
Anticlinal traps are formed by folding of rock. For example, if a porous sandstone unit covered with low permeability shale is folded into an anticline, it may form a hydrocarbons trap, oil accumulating in the crest of the fold. Most anticlinal traps are produced as a result of sideways pressure, folding the layers of rock, but can also occur ...
A river anticline is a geologic structure that is formed by the focused uplift of rock caused by high erosion rates from large rivers relative to the surrounding areas. [1] An anticline is a fold that is concave down, whose limbs are dipping away from its axis, and whose oldest units are in the middle of the fold. [ 2 ]
Ashby Anticline: Leicestershire England E&W 141, 155 (x-sections) BGS:BRG 10; Smith et al. 2005 Ashover Anticline: England E&W 112 Smith et al. 2005 Astbury Anticline: England Astley Syncline: Warwickshire England E&W 169 Aughton Anticline: E&W 59 Avonmouth Syncline: England BGS:BRG 16 Babel Anticline: Wales E&W 213 Backingstone Anticline ...
Diagram illustrating a pinch-out petroleum trap. A pinch-out or wedge-out [1] is a point where a stratum or other lithologically distinct body of rock thins to a feather edge and disappears, so that the underlying and overlying strata separated by the pinching out stratum come into direct contact.
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